2019 BMW 6 Series 2.0L Diesel · VD15 COS

The defining mechanical thread in this 2019 BMW 6 Series is a chronic, recurring advisory on the rear propeller shaft flexible coupling, which has appeared on three consecutive MOT tests between January 2024 and January 2026, with the most recent test on 21 January 2026 noting several splits in the rubber coupling. While the vehicle has passed every recorded test, this pattern of deterioration on a driveline component points to an ongoing wear issue that has not been rectified and is likely to progress toward a definitive failure at the next assessment. The 2026 test also introduced a fresh advisory for front brake disc wear and pitting on both sides, suggesting that consumables are beginning to reach the threshold of measurable deterioration alongside the driveline concern. The broader five-test history shows two completely clean passes in 2021 and 2022, indicating the coupling deterioration and brake disc wear are emerging rather than long-standing, but the consistency of the prop shaft advisory means a buyer should not treat this as a minor housekeeping item. Against an age of roughly seven years, the recorded mileage of 65,717 miles equates to an annual accumulation of approximately 9,388 miles, which sits squarely within typical parameters for the vehicle. There are no extended gaps in the testing record that would imply long periods of standing, and the regular annual progression between tests is consistent with steady year-round use. The mileage level means wear on consumables such as brake discs, pads and tyres is proceeding at a predictable rate, and the fact that the front discs have pitted on both sides at this mileage is broadly in line with expectations for a car of this age and weight. There is no evidence in the records of abnormally rapid mileage accumulation between tests that would suggest commercial or high-intensity use. For a prospective buyer, the priority area for inspection is the rear propeller shaft flexible coupling, which is accessible underneath the vehicle and should be physically examined with the car on a ramp. The rubber element should be free from splits, cracks and visible deterioration; any signs of further cracking, perishing or movement between the rubber and the metal flanges would suggest that replacement is now due rather than merely advisory. On a test drive, listen for any rotational drummling or clonking from the centre and rear of the underside, particularly when engaging drive, reversing, or transitioning between acceleration and deceleration, as a failing flexible coupling can transmit noticeable vibration through the floor and drivetrain. The 2026 advisory also recorded that the nearside front jacking block is missing, which should be checked and replaced, although this is a minor point relative to the driveline concern. The front brake disc advisory deserves direct attention before purchase, as discs that are both worn and pitted on both sides typically require skim machining or replacement, and uneven wear patterns can be felt through the steering wheel. During a road test, pay attention to any vibration, judder or pulsation through the brake pedal or steering when coming to a firm stop from higher speeds, as this is the classic symptom of warped or corroded brake disc surfaces. A visual check through the wheel spokes should confirm the inner and outer disc edges for a visible lip and any obvious scoring or rust pitting across the friction surface. The 2024 advisory noted a nail in the nearside rear tyre and edge wear on the same corner, so a check of the rear tyres for uneven inner or outer shoulder wear, along with confirmation that any repaired or replaced tyres are of matching specification, is also advisable. Overall, the mechanical picture is one of a car passing its tests but with two accumulating wear issues that warrant a pre-purchase inspection focused on the driveline and front braking system.